Three Generation Family Households: Differences by Family Structure at Birth.

Using data from the Fragile Families and Child Well-being Study (N=4,898), this study investigates how the share, correlates, transition patterns, and duration of three generation households vary by mother's relationship status at birth. Nine percent of married mothers, 17 % of cohabiting, and 45% of single mothers live in a three generation family household at the birth of the child. Incidence over time is much higher and most common among single mother households, 60% live in a three generation family household in at least one wave. Economic need, culture, and generational needs are associated with living in a three generation household and correlates vary by mother's relationship status. Three generation family households are short lived and transitions are frequent. Kin support through coresidence is an important source of support for families with young children and in particular families that are unwed at the birth of their child.